"""
@Project: pythonPro1
@Name: fun_file.py
@Author: linxin_liu
@Date: 2022/10/12 14:21
"""
if __name__ == '__main__':
    print('before')  # 模快被调用也不执行。


def add(x, y):
    return x + y


def mul(x, y):
    return x * y


if __name__ == '__main__':
    print('after')
    print('over')
